I am creating a bitcoin website. I would rather the bitcoin didn't go through my website to prevent any security issues.
What happens is one user pays another user, and when that happens my website delivers the digital goods instantly.
All I need to do is check if the one user pays the other user. But the problem I can't find a way to do that easily.
I was going to use the blockchain api to check, but if they pay through a website like cryptsy, I can't check because it goes through multiple addresses.
The only solution I've found so far is to make them use the bitcoin wallet, or use an escrow service.
Escrow is my last option, because it always has a fee, and I really want this to be user to user.
I could really use some suggestions!